changing posts to reference clerkUserID rather than id in mongodb

app/(tabs)/profile.tsx

@@ -23,7 +23,7 @@ export default function PostsScreen() {
     )
 
     async function fetchData() {
-        fetch(`http://localhost:3000/api/v1/posts/user/6883ddb2640ebaa1a12e3791`)
+        fetch(`http://localhost:3000/api/v1/posts/user/${user?.id}`)
             .then((res) => res.json())
             .then((json) => {
                 console.log(json)